Idiopathic Scrotal calcinosis cutis – does its pathogenesis link with epidermal cyst? A case report with review of literature from rural India

Idiopathic calcinosis cutis is characterized by multiple nodules present on scrotal skin. They are usually seen in young adults and present as painless, asymptomatic, round, and firm nodules. A 30-year-old male presented with painless, multiple scrotal nodules. The serum levels of calcium, phosphorus, calcitonin, and parathyroid hormone were within normal limits. There was also no history of trauma. Clinically, it was diagnosed as sebaceous cyst. Fine-needle aspiration cytology examination was suggestive of epidermal inclusion cyst. Histopathology examination confirmed the diagnosis of idiopathic scrotal calcinosis cutis, thus suggesting that the dystrophic calcification of epidermal inclusion may be an initiating event in the pathogenesis of the idiopathic scrotal calcinosis cutis. The documentations regarding the association of idiopathic calcinosis cutis with epidermal cyst are not enough. Hence, this case report may enrich the scanty existing data.